Steam-trap.



J. H. MANNING.

STEAM TRAP.

APPLIGATION FILED MAR. 10, 1911.

1,1 14,162, Patented Oct. 20, 1914.

INVENTOR THE NORRIS PETERS 60., FHOTO-LITH-L. WASHINGTON. D. C.

UNITED STATESPATENT OFFICE.

JOHN H. MANNING, or NnwYoaic, N. Y., AssieNoa T0 CRANE COMPANY, orCHICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

STEAM-TRAP.

Specification of Iietter s. Patent.

Patented Oct. 20, 1914.

Application filed. March 10, 191LSeria1No. 613,599. 1

T0 aZZ whom it may concern Be it known that 1, JOH H. MANNING, a citizenof the United States, residing at New York, in the county of Kings andState of New York, have invented certain new and useful Improvements inSteam-Traps, of which the following is a specification.

The invention relates in general to steam traps and operating meanstherefor, and it has for its primary objects; the provision of animproved trap for draining heating systems of condensation, air andexhaust steam, adapted to secure positive and rapid circulation in thesystem; and the provision of improved mechanism within the trap adaptedto create a vacuum by condensing the steam therein and thereby draw offthe con densation and exhaust pressure from the system. These and suchother objects as may hereinafter appear or are incidental to myinvention, 1 attain by means of a construction illustrated in preferredform in the accompanying drawings, wherein- Figure 1 is an elevation ofone side of a steam trap embodying my invention,

Figure 2 is an elevation of the other side. of the trap.

Figure 3 is a section through the T of the trunnion constituting theaxis of the trap.

Figure 4- is another view of the T on the line TIL-HI in Figure 3.

i In general my invention resides in the application of a cold waterspray within the trap body in order to secure a vacuum therein bycondensing the steam contained in the trap body. This vacuum draws orpulls the condensation in the system intothe trap from whence it isdischarged to the boiler or, elsewhere. I K

For the purpose of illustration I have shown my invention applied to areturn trap of the usual character. The trap comprises the frame work 1,in which is mounted the trunnion 2 carrying the tank of thetrap 3. Themovement of the tank is limited by the straps -1 and 1 secured to theframe work 1. Referring to Figure 1 it will be seen'that an inlet pipe5, which is the condensation and the exhaust steam return pipe of thesystem leads into the trunnion 2, which is of the usual hollowconstruction. The pipe 6 leading from the trunnion is the discharge pipeof the trap and leads to the boiler or elsewhere. Swing check valves 7and 8 are provided for the pipes 5 and 6 respectively.

Referring to Figure 2, 9 is a cold water sup ply pipe which opens intothe other side of the trunnion 2, and 10 is alive steam inlet into thetrunnion. The cold water supply pipe 9 is provided with a valve 11 forcontrolling the fiow of water, and the live steam inlet 10 is controlledby the valve 12. These two valves are operated by the tilting of thetrap by means of the levers 13 and 14; and the stems 15 and 16, soarranged that when the live steam inlet valve is. open the cold watersupply valve is closed and when the cold water supply valve is open thesteam inlet valve is closed. The leverl3 carries the counterbalanceweight 17. The trunnion 2, the axis of the movement of the tank, has twoseparateand independent chambers 21 and 22, thesetwo chambers' meetingin a divided T 23 which projects slightly into the tank. Each divisionof the T therefore communicates with one of the two chambers 21 and 22and thusprovides an unobstructed passage from each of the chambers intothe tank as an opening or cut-away portion 19 is provided in one part ofthe projecting T which communicates with the chamber 21 and the chamber22 leads through the other part of the projecting T to the pipe 18. Thepipe 18 is provided with the nozzle 20, and the cold water entering fromthe supply pipe5 is discharged from the nozzle in the form of a spray,as indicated in dotted lines in Figure 1. I I j The operation of thedevice is as follows, assuming the parts to be imposition shown in theFigures 1 and 2, which is the filling position. In this position thetank 3 contains a portion of the steamused in expelling the liquidcondensation from the tank I through the opening 19 and discharge pipe6. 'This live steam inlet valve 12 is closed and-the 'c'old water supplyvalve 11 is open, permitting cold water to enter the pipe 18 from whichit is discharged in the form of a spray. This spray condenses the: steamremaining inuthe tank, and thus creates a vacuum, which draws the liquidcondensa tion, air and exhaust steam from the return pipe 5 of thesystem, into the tank through the opening 19 the swing check valve 8 being normally llGld .ClOSd by the vacuum. The water supply valve 11remains open until theweight of the condensation overcomes the balanceweight 17 and the trap live steam inlet valve 12, and the live-steampassesinto the tank through the trunnion 2 and the'pipe 18, and drivesor permits the condensation to flow through the opening 19 in thetrunnion to the discharge pipe 6, the check valve 7 in the liquid inletreturn' pipe 5 beingnormally held closed by the steam sure within thetank is greater than the pressure in the cold water supply pipe 9,WlllChf'WOLllCi prevent the flow of cold water into the tank, a .pumpmay be placed in the supply pipe9 to force the water into the tank or arelief valve mechanism provided to reduce the pressure in the tank.Under ordinary conditions, however, the pressure should reduce withsaflicient rapidity to permit the cold water to flow into the tank.

The device is simple and efiective and secures a positive, even andrapid circulation in the system, .as practically a constant vacuum ismaintained during the intervals between the tilting movements of thetank. It willibe obvious that the invention may be applied to traps ofdifferent characters than the one illustrated, and that it may be usedin drawingwater from a hot well to supply a boiler .and similar uses.Other advantages will occur to those familiar with the art.

Having thus described my invention and illustrated its use what I claimas new and desire to secure by Letters Patent is the following 1. Asteam trap comprising in combination a frame, a hollow trunnion mountedon the frame, a tilting tank supported on the trunnion, aliquid returnpipe and a liquid discharge pipe connected to one side of the trunnion,a live steam pipe and a cold water supply pipe connected to the otherside of the trunnion, a check valve in the steam pipe, a valve in thecold water supply pipe, and operative connections for said valveswhereby the tilting of the tank in one direction opens the steam valveand closes the cold water'valve and in the other direction closes thesteam valve and opens the cold water valve, the said trunnion openinginto the tank from the liquid inlet and discharge side and having ahollow projection extendinginto the tank forming a passage foralternately conveying steam and cold water into'the tank from the otherside as the tank tilts.

2. A: steam trap comprising in combinationa frame, a hollow trunnionmounted on the frame, a tilting tank supported on the trunnion, a liquidreturn pipe and a liquid discharge pipe connected to one side of thetrunnion, a live steam pipe and a cold water supply pipe connected tothe other side of I the trunnion, a check valve in the steam pipe, avalve in the cold water supply pipe, operative connections for saidvalves whereby the tilting of the tank in one direction opens the steamvalve and closes the cold water valve and in the other direction closesthe steam valve and opens the cold water valve, the said trunnionopening into the tank fromthe liquid inlet and discharge side and havinga hollow projection extending into the tank forming a passage foralternately conveying steam and cold water into the tank from the otherside as the tank tilts, acheck valve in the liquid return pipe closingwhen the pressure in the tank becomes greater than the pressure in saidpipe, and a check valve in the liquid discharge pipe closing when thecold water condenses the steam in the tank and creates a vacuum therein.

8. A steam trap comprising in combination a frame, a hollow trunnionmounted on the frame, a tilting tank supported on the trunnion, a liquidreturn pipe and a liquid discharge pipe connected to one side of thetrunnion, a live steam pipe and a cold water supply pipe connected tothe other side of the trunnion, a check valve in the steam pipe, a valvein the cold Water supply pipe, operative connections for said valveswhereby the tilting of the tank in one direction opens the steam valveand closes the cold water valve and in the other direction closes thesteam valve and opens the cold water valve, the said trunnion openinginto the 4 tank from the liquid inlet and discharge side and having ahollow projection extending into the tank forming a passage foralternately conveying steam and cold water into the tank from the otherside as the tank tilts, a check valve in the liquid return pipe closingwhen the pressure in the tank becomes greater than the pressure in saidpipe, a check valve in the liquid discharge pipe closing when the coldwater condenses the steam in the tank and creates a vacuum therein, anda check valve in the cold water supply pipe closing when the pressure inthe tank rises above that in said pipe.

4. A steam trap comprising in combination a frame, a trunnion mounted onthe frame, a tilting tank supported on the trunnion, the said trunnionopening into the tank, a steam pipe and a cold water supply pipeconnected to the trunnion, a liquid return pipe and a liquid dischargepipe, an outlet from the tank forming a passage for conveying water ofcondensation from the return pipe into the tank and from the tank ,tothe liquid discharge pipe, a valve in the steam pipe, a valve in, thecold water supply pipe, and operativ monnections for said valves wherebywhen the tank tilts in one direction the steam valve is opened and thewater valve closed and when the tank tilts in the other direction thesteam valve is closed and the cold water valve opened.

5. A steam trap comprising in combination a frame, a trunnion mounted onthe frame, a tilting tank supported on the trunnion, the said trunnionopening into the tank, a steam pipe and a cold water su ply pipeconnected to the trunnion, a liquid return pipe communicating with thetank, a liquid discharge pipe communicating with the tank, a valve inthe steam pipe, a valve in the cold water supply pipe, and operativeconnections for said valves whereby when In testimony whereof, I havehereunto set my hand in the presence of the two subscribed witnesses. 1e a i p r JOHN H. MANNING. Witnesses:

- H. A. CROOKER,

A. E. FARLEY.

Copies of this patent may be obtained fofdive cents each, by addressingthe commissionet' o1. Patents.

Washington, D. 0." A

. tion thesteam valve is closed and the cold water valve opened.

